I have tried 99 times and have failed, but on the 100th time came success.
The more success the quantum theory has, the sillier it looks
[Asked about a book in which 100 Nazi professors charged him with scientific error.] Were I wrong, one professor would have been quite enough.
The greater the doubt, the greater the awakening
You cannot prevent and prepare for war at the same time.
You must be aware that most men (and also not only a few women) are by nature not monogamous. This nature makes itself even more forceful when tradition and circumstance stand in an individual's way.