You hypocrite, first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother’s eye.
Matthew 7:5 NIV
Stanford Encyclopedia of Philosophy
- Category Theory (plato.standford.edu)
Category theory has come to occupy a central position in contemporary mathematics and theoretical computer science, and is also applied to mathematical physics. Roughly, it is a general mathematical theory of structures and of systems of structures.