Final answer:
Skepticism is the philosophy that believes man is not capable of rendering judgment because nothing could be known for certain. Philosophers such as Socrates, Pyrrho, Sextus Empiricus, David Hume, and Immanuel Kant have all advocated some form of skeptical philosophy.
Step-by-step explanation:
The philosophy that believed in the concept that man is not capable of rendering judgment because nothing could be known for certain is known as Skepticism. Skepticism is the belief that some or all human knowledge is impossible, as even our best methods for learning about the world sometimes fall short of perfect certainty. Philosophers such as Socrates, Pyrrho, Sextus Empiricus, David Hume, and Immanuel Kant have all advocated some form of skeptical philosophy.