No valid plans for the future can be made by those who have no capacity for living now.
No man can exactly calculate the capacity of human genius and stupidity, nor the incapacity of will.
The human capacity for guilt is such that people can always find ways to blame themselves.
I am looking for a lot of men who have an infinite capacity to not know what can't be done.
After all, you must have a capacity to receive, or even omnipotence can't give.
Intellectual capacity is no guarantee against being dead wrong.