So we find that the three possible solutions of the great problem of increasing human energy are answered by the three words: food, peace, work... Their scientific meaning and purpose now clear to me: food to increase the mass, peace to diminish the retarding force, and work to increase the force accelerating human movement.
There were lots of little boys having their bar mitzvahs all over the world, and they sent me tapes of some of them that they interviewed, probably six or seven little boys, and there was something about Mendel. I just loved his little face. I loved the energy of Mendel.