Quote

The beginning of knowledge is the discovery of something we do not understand.

All our knowledge has its origins in our perceptions.

The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.

We can only reason from what is; we can reason on actualities, but not on possibilities.

Where the senses fail us, reason must step in.

It is beyond a doubt that all our knowledge begins with experience.

We can't have full knowledge all at once. We must start by believing; then afterwards we may be led on to master the evidence for ourselves.

All the different ways we know the world all come from the brain, and they all depend on each other to make sense.