In his Inaugural Dissertation of 1770, Immanuel Kant denies the realty of time and space and of temporal and spatial form. He writes:
Time is not something objective and real, neither a substance, nor an accident, nor a relation. It is the subjective condition necessary by the nature of the human mind for coordinating any sensible objects among themselves by a certain law; time is a pure intuition.
Space is not something objective and real, neither substance, nor accident, nor relation; but subjective and ideal, arising by fixed law from the nature of the mind like an outline for the mutual co-ordination of all external sensations whatsoever.It is noteworthy that Kant is not implying that the existence of objects perceived in space and time is dependent on the nature of the human mind. Rather he is saying that the existence of mind-dependent forms like time and space make it possible for the human mind to precisely observe the mind-independent objects.