At least I have the modesty to admit that lack of modesty is one of my failings

At least I have the modesty to admit that lack of modesty is one of my failings.

Time is a great teacher, but unfortunately it kills all its pupils.

Time is a great teacher, but unfortunately it kills all its pupils

Teaching is not a lost art, but the regard for it is a losttradition.

The luck of having talent is not enough; one must also have a talent for luck