Everything of importance has been said before by somebody who did not discover it.

Dogmatism is the anti-Christ of learning.

Without adventure civilization is in full decay.

I consider Christianity to be one of the great disasters of the human race... It would be impossible to imagine anything more un - Christianlike than theology.

Without deductive logic science would be entirely useless. It is merely a barren game to ascend from the particular to the general, unless afterwards we can reverse the process and descend from the general to the particular, ascending and descending like angels on Jacob's ladder.

In all education the main cause of failure is staleness.

No one who achieves success does so without acknowledging the help of others. The wise and confident acknowledge this help with gratitude.