Speech is an essential mechanism of democracy, for it is the means to hold officials accountable to the people. [...] The right of citizens to inquir… - Anthony Kennedy

The First Amendment prohibits the establishment of religion and promises the free exercise of religion. From these safeguards, and from the guarantee of freedom of speech, it follows there is freedom of belief and expression. It is an urgent necessity that officials adhere to these constitutional guarantees and mandates in all their actions, even in the sphere of foreign affairs. An anxious world must know that our Government remains committed always to the liberties the Constitution seeks to preserve and protect, so that freedom extends outward, and lasts.

At the heart of liberty is the right to define one's own concept of existence, of meaning, of the universe, and of the mystery of human life. Beliefs about these matters could not define the attributes of personhood were they formed under compulsion of the State. … people have organized intimate relationships and made choices that define their views of themselves and their places in society, in reliance on the availability of abortion in the event that contraception should fail…. We conclude the line should be drawn at viability, so that, before that time, the woman has a right to choose to terminate her pregnancy…. there is no line other than viability which is more workable. To be sure, as we have said, there may be some medical developments that affect the precise point of viability, but this is an imprecision within tolerable limits. … A husband has no enforceable right to require a wife to advise him before she exercises her personal choices.

Some kinds of government regulation of private consensual homosexual behavior may face substantial constitutional challenge.