In his St Andrews lectures Chalmers excluded mental philosophy and included the whole sphere of moral obligation, dealing with man's duty to God and to his fellow-men in the light of Christian teaching.
Many of his lectures were printed in the first and second volumes of his published works.

In the field of ethics he made contributions in regard to the place and functions of volition and attention, the separate and underived character of the moral sentiments, and the distinction between the virtues of perfect and imperfect obligation.
In his St Andrews lectures Chalmers excluded mental philosophy and included the whole sphere of moral obligation, dealing with man's duty to God and to his fellow-men in the light of Christian teaching. Many of his lectures were printed in the first and second volumes of his published works.
In the field of ethics he made contributions in regard to the place and functions of volition and attention, the separate and underived character of the moral sentiments, and the distinction between the virtues of perfect and imperfect obligation.
Thomas Chalmers