ho study it. (pg. 11)
You may also find some useful material in A.J. Ayer's "The Meaning of Life"
Evidently, there is no general answer to the question what constitutes a meaningful life. A life lived in one culture at a given social and economic level which satisfies one person might well fail to satisfy another who dwelt in a different or even in the same environment. Treating the question subjectively one can say, platitudinously, that it is a matter of the degree to which one achieves self fulfilment. Treating it objectively, it is a matter of one's standing in one's society and the historical influence, if any, that one exerts. We have seen that the results of these different viewpoints need not coincide either with each other or with what we humane and liberal persons would regard as morally commendable.
...or his other writings:
The ground for taking ignorance to be restrictive of freedom is that it causes people to make choices which they would not have made if they had seen what the realization of their choices involved.
"The Concept of Freedom"