Quote of the day
All thought must, directly or indirectly, by way of certain characters, relate ultimately to intuitions, and therefore, with us, to sensibility, because in no other way can an object be given to us.
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)