Truth to tell, we are all criminals if we remain silent.

For I regard memory not as a phenomenon preserving one thing and losing another merely by chance, but as a power that deliberately places events in order or wisely omits them. Everything we forget about our own lives was really condemned to oblivion by an inner instinct long ago.

This is the first time in history that a war has involved the whole world, and also it may last many years more; this thought is soul-shattering for all of us as human beings. It is horrible to think that the crimes committed by this one man Hitler have these many years been destroying the lives of hundreds of thousands and millions, and one would despair entirely were it not certain that the majority, the innumerable majority which opposes him openly or secretly, will succeed in wiping out once and for all him and his.

There are two types of compassion. One - is faint-hearted and sentimental. Actually, it is nothing more than impatience of the heart, that is hurrying to get rid of that hard feeling when you see other peoples' sufferings; this is not a compassion, but just an instinct will to defence yourself from misfortunes of others. But there is another compassion - real one, that demands for actions, not sentiments, it knows what it wants, and it is full of determination to do everything, what is in human power and even beyond it.

Whatever a woman's reason may say, her feelings tell her the truth.

One never gets to know a person's character better than by watching his behavior during decisive moments.... It is always only danger which forces the most deeply hidden strengths and abilities of a human being to come forth.

But don't despise error. When touched by genius, when led by chance, the most superior truth can come into being from even the most foolish error. The important inventions which have been brought about in every realm of science from false hypotheses number in the hundreds, indeed in the thousands.