I have tried 99 times and have failed, but on the 100th time came success.

The scientist is activated by a wonder and awe before the mysterious comprehensibility of the universe which is yet finally beyond his grasp. In its profoundest depths it is inaccessible to man.

(Reply on what constitutes scientific proof:)"The question is much too difficult for me.

I see in Nature a magnificent structure... that must fill a thinking person with a feeling of humility.

Dr. Einstein: Yes; But this year the answers are different.

Thanks to my fortunate idea of introducing the relativity principle into physics, you (and others) now enormously overrate my scientific abilities, to the point where this makes me quite uncomfortable.

The illusion that we are separate from one another is an optical delusion of our consciousness.