New perspectives give birth to new historic ages. Humankind has had many dramatic revolutions of understanding - great uses of fire and the wheel, language and writing. We found that the earth only seems flat, the sun only seems to circle the earth, matter only seems solid.

Your past is not your potential. In any hour you can choose to liberate the future.

It's not so much that we're afraid of change or so in love with the old ways, but it's that place in between that we fear . . . . It's like being between trapezes. It's Linus when his blanket is in the dryer. There's nothing to hold on to.

Real progress in understanding nature is rarely incremental. All important advances are sudden intuitions, new principles, new ways of seeing.

We cannot leave the trap until we know we are in it.

Uncertainty is the necessary companion of all explorers.

Martin Buber said he sensed a rising hunger for relatedness Men would no longer rise in rebellion merely against one oppressor or another but against the distortion of a great yearning, 'the effort towards community.'