There used to be a boy with very bad temper. His father gave him a bag full of nails and told him to batten one

In his famous book “The art of War” Sun Tzu wrote: “If you don’t know yourself and you don’t know your enemy, you lose the

“I think, therefore I am” is a well known statement of Rene Descartes,  famous French philosopher and scientist from the 17th century. Our mental capabilities