I have more enemies than I deserve," I said. "I am fighting a losing battle, me against the world. The next century is at stake. Time is running out and my optimism is sorely strained."
"Yeah?" he said. "I was young once too.

Author describes one character's optimism as, that quiet well-being which perhaps you and I have felt on a sunny afternoon when, in our brightest youth and health, life has opened a new vista for us, and long to-morrows of activity have stretched before us like a lovely plain which there was no need for hurrying to look at, because it was all our own.

Remember, you cannot be both young and wise. Young people who pretend to be wise to the ways of the world are mostly just cynics. Cynicism masquerades as wisdom, but it is the farthest thing from it. Because cynics don’t learn anything. Because cynicism is a self-imposed blindness, a rejection of the world because we are afraid it will hurt us or disappoint us. Cynics always say no. But saying “yes” begins things. Saying “yes” is how things grow. Saying “yes” leads to knowledge. “Yes” is for young people. So for as long as you have the strength to, say “yes'.

Free imagination is the inestimable prerogative of youth and it must be cherished and guarded as a treasure.

The early expression of my youth was filled with all the aspects of art.

I am sure my fellow-scientists will agree with me if I say that whatever we were able to achieve in our later years had its origin in the experiences of our youth and in the hopes and wishes which were formed before and during our time as students.