I had a project for my life which involved 10 years of wandering, then some years of medical studies and, if any time was left, the great adventure of physics.

Live your life not celebrating victories, but overcoming defeats.

The true revolutionary is guided by great feelings of love.

It's a sad thing not to have friends, but it is even sadder not to have enemies.

Democracy cannot consist solely of elections that are nearly always fictitious and managed by rich landowners and professional politicians.

Be realistic, demand the impossible!

Above all, try always to be able to feel deeply any injustice committed against any person in any part of the world. It is the most beautiful quality of a revolutionary.

Every day People straighten up the hair, why not the heart?

Let the world change you and you can change the world

If you have the capacity to tremble with indignation every time that an injustice is committed in the world, then we are comrades.

Youth should learn to think and act as a mass. It is criminal to think as individuals!

Sometimes we smile at a child thats afraid of the dark. I think more ridiculous is a man or woman afraid of the light.

Regardless, for me, I feel a personal obligation and a social responsibility.

The more we tune into our own frequency of love, the more love will spread.

Political movements always belong to the young.

My father was raised with brothers, he was a football player and a boxer, he was a chief petty officer in the Navy, he was a man of his times.

Sweet is the pleasure itself cannot spoil. Is not true leisure one with true toil?

I never got to see the '27 Yankees. Everyone says that was the greatest team ever. But I think it would've been a great series if we'd have had the chance to play them.

Self-study, in a sense of learning by yourself without anybody teaching you anything, has an enormous value.

They cannot count on the press and they cannot count on Congressional committees to bring the problems of the scientific community to their own attention, or to police the scientific community.