1. Can you imagine young people nowadays making a study of trigonometry for the fun of it? Well I did. - Clyde Tombaugh 

2. I want to help middle-school girls stay interested in math and be good at it, and see it as friendly and accessible and not this scary thing. Everyone else in society tells them it's not for them. It's for nerdy white guys with pocket protectors. - Danica McKellar 

3. A fairly bright boy is far more intelligent and far better company than the average adult. - John B. S. Haldane 

4. When I was a teenager, I read a lot of Poe. - Dario Argento 

5. Adolescence isn't just about prom or wearing sparkly dresses. - Jena Malone 

6. There is a point in every young person's life when you realize that the youth that you've progressed through and graduate to some sort of adulthood is equally as messed up as where you're going. - Jena Malone 

7. When I look in the mirror I see the girl I was when I was growing up, with braces, crooked teeth, a baby face and a skinny body. - Heather Locklear 

8. Time scoots along pretty fast when you grow up. - Alan Ladd 

9. Time misspent in youth is sometimes all the freedom one ever has. - Anita Brookner 

10. The area of teenage life is not necessarily rarefied; we've all gone through that period. It's not as rarefied as a western or a space adventure or a gangster film, but it has its own dynamic. - Gus Van Sant 

11. Trouble is, kids feel they have to shock their elders and each generation grows up into something harder to shock. - Ben Lindsey 

12. I think growing up is difficult and it's a process that I'm always interested in, with kids and adults, they are often on two different universes. - Alice Hoffman 

13. Nobody understands anyone 18, including those who are 18. - Jim Bishop 

14. As I've said many times, the single most oppressed class in America right now is the teenager. - Joe Bob Briggs 

15. Maturity is only a short break in adolescence. - Jules Feiffer 

16. The toddler must say no in order to find out who she is. The adolescent says no to assert who she is not. - Louise J. Kaplan 

17. Adolescence is the conjugator of childhood and adulthood. - Louise J. Kaplan 

18. Children, even infants, are capable of sympathy. But only after adolescence are we capable of compassion. - Louise J. Kaplan 

19. I was a quiet teenager, introverted, full of angst. - Nigella Lawson 

20. I got through my teen years by being a bit of a clown. - Diane Cilento 

21. I think there's a time in your life where you don't feel like you fit in. I think everyone has that when you're a teenager, especially, and especially in the society we live in. - Matthew Vaughn 

22. Adolescence is when girls experience social pressure to put aside their authentic selves and to display only a small portion of their gifts. - Mary Pipher 

23. I think you go through a period as a teenager of being quite cool and unaffected by things. - Miranda Otto 

24. The most important role models should and could be parents and teachers. But that said, once you're a teenager you've probably gotten as much of an example from your parents as you're going to. - Andrew Shue 

25. This generation has given up on growth. They're just hoping for survival. - Penelope Spheeris 

26. All teenagers have this desire to somehow run away. - Joan Chen 

27. But when I was a teenager, the idea of spending the rest of my life in a factory was real depressing. So the idea that I could become a musician opened up some possibilities I didn't see otherwise. - Wayne Kramer 

28. Female adolescence is - universally - an emotionally and psychologically intense period. - Caitlin Flanagan 

29. I have always had a sense that we are all pretty much alone in life, particularly in adolescence. - Robert Cormier 

30. Teenagers today are more free to be themselves and to accept themselves. - John Knowles 

31. Teenagers who are never required to vacuum are living in one. - Fred G. Gosman 

32. My own experience being bullied - it made me a more compassionate person. It made me more sympathetic to the adolescent experience. - Carolyn Mackler 

33. Friendships in childhood are usually a matter of chance, whereas in adolescence they are most often a matter of choice. - David Elkind 

34. I don't believe in 'thinking' old. Although I've transitioned through many bodies - a baby, toddler, child, teen, young adult, mid-life and older adult - my spirit is unchanged. I support my body with exercise, my mind with reading and writing, and my spirit with the knowing that I am part of the Divine source of all life. - Wayne Dyer 

35. As a teen, I heard the second Velvet Underground album, 'White Light/White Heat,' and it was too much for my limited scope of appreciation. It was intense, but I didn't get it. - Henry Rollins 

36. I remember the first time I saw the 'Smells Like Teen Spirit' video. I will never forget that day. I just wanted to see Kurt Cobain's face. I had a feeling he was very cute. But, I couldn't see his face. When I finally did see him, he was even cuter than I imagined! - Shakira 

37. I'm a comic nerd. I'm a former serious collector for much of my childhood and early teen years I wanted to draw underground comics. - Anthony Bourdain 

38. When I found out I had to take off my shirt in 'Teen' movie, I panicked and hit the gym. I was like, 'It's going to be on film, documented, for my children to see. I can't be 140 pounds. I need to put on a little bit of muscle.' - Chris Evans 

39. I've been giving back since I was a teen, handing out turkeys at Thanksgiving and handing out toys at toys drives for Christmas. It's very important to give back as a youth. It's as simple as helping an old lady across the street or giving up your seat on the bus for someone who is pregnant. - Queen Latifah 

40. When my dad left public life, I was 13 years old. I went through my teen years and into adulthood in relative anonymity. After my dad's funeral, I was suddenly recognizable to people I passed on the street. - Justin Trudeau 

41. Children born to teens have less supportive and stimulating environments, poorer health, lower cognitive development, and worse educational outcomes. Children of teen mothers are at increased risk of being in foster care and becoming teen parents themselves, thereby repeating the cycle. - Jane Fonda 

42. If we as a nation are to break the cycle of poverty, crime and the growing underclass of young people ill equipped to be productive citizens, we need to not only implement effective programs to prevent teen pregnancy, but we must also help those who have already given birth so that they become effective, nurturing, bonding parents. - Jane Fonda 

43. It's about time we make the well-being of our young people more important than ideology and politics. As a country, we benefit from investing in their future by investing in teen pregnancy prevention. - Jane Fonda 

44. Even when I was a teen model, I didn't think it was fair that I had to enter the acting world to get insurance. - Tyra Banks 

45. I would not recommend a teen getting into modeling if they're not solid when it comes to their grades and school. That comes first. My mother always told me that came first. - Tyra Banks 

46. I've met so many new fans and amazing people while traveling to new cities and locations throughout 2017 in support of my album 'American Teen.' - Khalid