Belief in the causal nexus is superstition.
One is unable to notice something because it is always before one's eyes.
It is much easier to bury a problem than to solve it.
A man will be imprisoned in a room with a door that's unlocked and opens inwards; as long as it does not occur to him to pull rather than push it.
I act with complete certainty. But this certainty is my own.
Think of the tools in a tool-box: there is a hammer, pliers, a saw, a screwdriver, a rule, a glue-pot, nails and screws.--The function of words are as diverse as the functions of these objects.