...behind all the discernible laws and connections, there remains something subtle, intangible and inexplicable.

You cannot solve current problems with current thinking. Current problems are the result of current thinking.

It is not so important where one settles down. The best thing is to follow your instincts without too much reflection.

Only the Catholic Church protested against the Hitlerian onslaught on liberty. Up till then I had not been interested in the Church, but today I feel a great admiration for the Church, which alone has had the courage to struggle for spiritual truth and moral liberty

We should take care not to make the intellect our god; it has, of course, powerful muscles, but no personality.

The future is an unknown, but a somewhat predictable unknown. To look to the future we must first look back upon the past. That is where the seeds of the future were planted. I never think of the future. It comes soon enough.

The only race I know is the human one.