Being convinced one knows the whole story is the surest way to fail.
If anything is certain, it is that change is certain. The world we are planning for today will not exist in this form tomorrow.
It is not possible to know what you need to learn.
Successful people breed success.
We must define quality as conformance to specifications if we are to manage it.
Making a wrong decision is understandable. Refusing to search continually for learning is not.