Quote of the day
Like stones rolling down hills, fair ideas reach their objectives despite all obstacles and barriers. It may be possible to speed or hinder them, but impossible to stop them.
Alfred Tarski

Born: January 14, 1901
Died: October 26, 1983 (aged 82)
Bio: Alfred Tarski was a Polish logician, mathematician and philosopher.
Known for:
- Undecidable theories (1953)
- Logic, semantics, metamathematics (1983)
- Ordinal algebras (1956)