Science Is Practical Philosophy.

There Is Nothing More Ancient Than The Truth.

I Am Thing That Thinks: That Is, A Things That Doubts,affirms, Denies, Understands A Few Things, Is Ignorant Of Many Things, Is Willing, Is Unwilling, And Also Which Imagines And Has Sensory Perceptions.

... Moral Certainty Is Certainty Which Is Sufficient To Regulate Our Behaviour, Or Which Measures Up To The Certainty We Have On Matters Relating To The Conduct Of Life Which We Never Normally Doubt, Though We Know That It Is Possible, Absolutely Speaking, That They May Be False.

How Can You Be Certain That Your Whole Life Is Not A Dream?

Variant: When It Is Not In Our Power To Follow What Is True, We Ought To Follow What Is Most Probable.