One of the functions of intelligence is to take account of the dangers that come from trusting solely to the intelligence

One of the functions of intelligence is to take account of the dangers that come from trusting solely to the intelligence.

Don't take the will for the deed; get the deed

I would die happy if I knew that on my tombstone could be written these words, "This man was an absolute fool. None of the disastrous things that he reluctantly predicted ever came to pass!"

Nothing is unthinkable, nothing impossible to the balanced person, provided it comes out of the needs of life and is dedicated to life's further development

The earth is the Lord's fullness thereof: this is no longer a hollow dictum of religion, but a directive for economic action toward human brotherhood